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|Ab urbe condita||2139|
|Balinese saka calendar||1307–1308|
|English Regnal year||9 Ric. 2 – 10 Ric. 2|
|Chinese calendar||乙丑年 (Wood Ox)|
4082 or 4022
— to —
丙寅年 (Fire Tiger)
4083 or 4023
|- Vikram Samvat||1442–1443|
|- Shaka Samvat||1307–1308|
|- Kali Yuga||4486–4487|
|Japanese calendar||Shitoku 3|
|Minguo calendar||526 before ROC|
|Thai solar calendar||1928–1929|
1512 or 1131 or 359
— to —
1513 or 1132 or 360
|Wikimedia Commons has media related to 1386.|
- February 24 – Elizabeth of Bosnia, the mother of the overthrown Queen Mary of Hungary and Croatia, arranges the assassination of Charles III of Naples, the ruler of Hungary, Naples, Achaea and Croatia, with the result that:
- March 4 – Grand Duke of Lithuania Jogaila (having been baptised on February 15 in Wawel Cathedral, Kraków, and on February 18 married Jadwiga, 12-year-old queen regnant of Poland) is crowned Władysław II Jagiełło, King of Poland, beginning the Jagiellonian dynasty.
- May 9 – King John I of Portugal and King Richard II of England ratify the Treaty of Windsor.
- May 20 – Earliest recorded mention of the city of Pitești, in modern-day Romania.
- July 9 – Battle of Sempach: The Swiss safeguard independence from Habsburg rule.
- July – John of Gaunt leaves England to make good his claim to the throne of Castile by right of his second marriage to Constanza of Castile in 1371.
- September 23 – Dan I of Wallachia (modern-day southern Romania) is killed in battle against the Bulgarians and is succeeded by Mircea the Elder, one of the greatest rulers of Wallachia.
- October 18 – Heidelberg University (Ruprecht-Karls-Universität Heidelberg), the oldest in Germany, is founded at the behest of Rupert I, Elector Palatine, by charter of Pope Urban VI.
- November 21 – Timur's invasions of Georgia: Timurid dynasty Turco-Mongol leader Timur captures and sacks the Georgian capital of Tbilisi, taking King Bagrat V prisoner.
- The mother and sister of Queen Jadwiga of Poland are kidnapped by Jadwiga's brother-in-law.
- Abu al-Abbas is reinstated as ruler of the Marinid dynasty in modern-day Morocco.
- The Republic of Venice takes control of the island of Corfu.
- Construction begins on the Brancacci Chapel in Florence.
- Rozhdestvensky monastery is built in Muscovy.
- July 9 – Leopold III, Duke of Austria (in battle) (b. 1351)
- August 20 – Bo Jonsson (Grip), royal marshal of Sweden
- September 23 – Dan I of Wallachia (in battle)
- December 31 – Johanna of Bavaria, Queen of Bohemia (b. c. 1362)
- date unknown
- probable – William Langland, English poet (b. 1332)